Junjiao, Zhang, et al. “Pretreatment Mechanism of β-O-4 Lignin During Phosphoric Acid-Acetone Process Based on Density Functional Theory and Molecular Dynamic Simulations”. International Journal of Agricultural and Biological Engineering, vol. 9, no. 2, Mar. 2016, pp. 127-36, doi:10.25165/ijabe.v9i2.2212.